2013, XY SCREEN projection screen set up production plants in mainland China screen - Guangzhou-Yun audio-visual equipment, base set up in Guangzhou City, Guangdong Province, put into product categories are screen frame, curved frame screen, electric screen, Folding screen, easy screen, large-scale projects of electric and projector hanger; curtain material comprises acoustically transparent screen, 3D acoustically transparent screen, metal screen, high-definition soft screen, high-definition glass screen and so on. The company's main product projection screen, projector screen is mainly used in home theater, office culture, education, etc., welcome customers to consult. Instructions higher bracket curtain curtain height of the bracket, if the first hung curtain rail, good location housing the lower pole rises on pole position again, then a small effort to the point of people tired sweating. However, if the pole on the rise right before the film projection screen wholesale, the first housing rose the most pole top positioning hole, then up again on the pole it would be much more effort, because the height is reduced number of turns of the spring turn reduced. After positioning the pole, and then he moved down the casing, exposing the dark side and positioning. Operation would be easy. 2013, XY SCREEN screen projection screen set up production plants in mainland China - Guangzhou-Yun audio-visual equipment, base set up in Guangzhou City, Guangdong Province, put into product categories are screen frame 4K high-definition projection screen, curved screen frame , electric screen, folding screen, easy screen, large-scale projects of electric and projector hanger; curtain material comprises acoustically transparent screen, 3D acoustically transparent screen, metal screen, high-definition soft screen, high-definition glass screen and so on. The company's main product projection screen, projector screen is mainly used in home theater, office culture, education, etc., welcome customers to consult. Definition sphere: all points from the point of space equal to a fixed length graphic composition called a ball. Spherical surface is a continuous three-dimensional graphics, surrounded by a spherical geometry called sphere. A surface of the ball is a sphere surface, the surface is called spherical. Balls and circle similar, there are also a center called the Globe. Astral projection screen video bar, especially the "Earth." Mathematics semi-sphere to the basic concept of a sphere having a diameter of its rotation axis, a rotation is called a spherical surface. Surrounded by spherical geometry is called a sphere, called balls. The center is called the center of the sphere semicircle. Movies & Bar projection screen wholesale | Guangdong video bar projector screen | male cloud audiovisual equipment provided by the Guangzhou-Yun audio-visual equipment. Guangzhou-Yun audio-visual equipment (www.xy-screen.com) strong, credible, in Guangzhou film screening equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead male cloud audio-visual equipment and you hand into the brilliant, for a better future!